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Cross-origin resource sharing (CORS)

Cross-origin resource sharing (CORS) is a mechanism that allows restricted resources on a web page to be accessed from another domain outside the domain from which the first resource was served. CORS also relies on a mechanism by which browsers make a “preflight” request to the server hosting the cross-origin resource, in order to check that the server will permit the actual request. In that preflight, the browser sends headers that indicate the HTTP method and headers that will be used in the actual request. For security reasons, browsers restrict cross-origin HTTP requests initiated from scripts. For example, fetch() and XMLHttpRequest follow the same-origin policy. This means that a web application using those APIs can only request resources from the same origin the application was loaded from unless the response from other origins includes the right CORS headers.

Resource types

Invocations of fetch() or XMLHttpRequest
Web Fonts (for cross-domain font usage in @font-face within CSS), so that servers can deploy TrueType fonts that can only be loaded cross-origin and used by websites that are permitted to do so
WebGL textures
Images/video frames drawn to a canvas using drawImage()
CSS shapes from images
scripts
iframes

GitHub: https://github.com/topics/cors
Wikipedia: https://en.wikipedia.org/wiki/Cross-origin_resource_sharing
Created by: WHATWG, Matt Oshry, Brad Porter, Michael Bodell, Tellme Networks
Released: May 2006
Related Topics: xhr, ajax, jsonp, content-security-policy,
Last updated: 2025-02-04 00:06:26 UTC
JSON Representation

https://github.com/sumaiyarimu22/proxima-server

Proxima is a powerful project management app built using the MERN stack. With proxima, users can create, update, and delete their own projects with ease. The app is highly secure, featuring robust JWT authentication and frontend route protection.

avast bcrypt cors dotenv express jsonwebtoken mongodb mongoose react validator

Last synced: 18 Dec 2024

https://github.com/sumaiyarimu22/envelope-server

bcryptjs cors dotenv express jsonwebtoken mongoose validator

Last synced: 18 Dec 2024

https://github.com/zeuz8/simple-notes-backend

Backend repository for a Simple Web Notes App, designed to handle the storage of note data using MySQL database. This project aims to provide practical insights into MySQL data storage and retrieval mechanisms.

cors expres mysql2 nodejs nodemon

Last synced: 30 Jan 2025

https://github.com/talhat298/surgical-server

SurgicalSavvy Server is a backend service built with Node.js, Express, and MongoDB. This project is designed to manage surgical services and orders, providing a RESTful API for interacting with the data.

api cors javascript mongodb nodejs reactjs

Last synced: 19 Dec 2024

https://github.com/talhat298/product-order-crud

This Node.js application, built with TypeScript, Express, and MongoDB, offers an API to manage products and orders with functionalities for creating, retrieving, updating, and deleting.

cors curd-operation dotenv eslint expressjs mongodb nodejs nodemon typescript zod

Last synced: 19 Dec 2024

https://github.com/seifsheikhelarab/ts-rest-api

A TypeScript-based REST API for user authentication and management with JWT-based authentication, bcrypt password hashing, and secure session handling.

bcrypt body-parser compression cookie-parser cors crypto dotenv express-js http jsonwebtoken lodash mongodb mongoose morgan node-js typescript

Last synced: 19 Dec 2024

https://github.com/abhich21/simplifi

A basic login template app for any website including frontend and backend.

axios cors expressjs mongoose nodejs notistack react-router-dom reactjs styled-components

Last synced: 19 Dec 2024

https://github.com/rob-blackbourn/bareasgi-cors

CORS support for bareASGI

asgi asyncio bareasgi bareasgi-cors cors cors-support python web

Last synced: 19 Dec 2024

https://github.com/ashimasaini45/authentication-apis

Tech Stack: Express.js(Backend), MongoDB(Database)

axios bootstrap cors nodemailer plugins-api react-router

Last synced: 19 Dec 2024

https://github.com/dodul01/teamvist-server

The server-side codebase for TeamVista Employee Management Website is responsible for handling backend logic, database interactions, and API endpoints.

api cors expressjs middleware mongodb nodejs

Last synced: 19 Dec 2024

https://github.com/dodul01/bookease-server

The BookEase Server Repository is the backend foundation of the hotel booking website, responsible for handling user authentication, room booking processes, and the management of user reviews.

cors express-js middleware mongodb nodejs-server nodejsapi

Last synced: 19 Dec 2024

https://github.com/toorop/ipfs-proxy

An IPFS reverse proxy that handle CORS (especially preflight), authentification, access rules, and more...

authentication cors ipfs reverse-proxy

Last synced: 24 Dec 2024

https://github.com/florian-catalin-elisei/realtime-chat-application

This is a straightforward realtime chat application created using React for the frontend and Node.js with Socket.IO for the backend. Users have the ability to join distinct chat rooms and engage in realtime communication.

cors css express html javascript query-string react react-router-dom react-scroll-to-bottom socket-io socket-io-client

Last synced: 19 Dec 2024

https://github.com/florian-catalin-elisei/pdf-generator

This application combines React on the client side and Puppeteer with Express on the server side to generate PDF receipts. React, along with Axios, handles user input and HTTP requests, while Puppeteer on the server side creates PDFs using the submitted data.

axios cors css express file-saver html javascript puppeteer react